Gerstrom



No. 622,798. Patented Apr. II, I899.

E. E. F. FAGERSTROM. REGULATING'OEVIOE FOR PETROLEUM MOTORS.

(Application filed May 10, 1898.) (N0 Model.) 2 $heets-Sheet I.

m: norms PETERS co VHUYOAJTHO WASHINGTON, o. c.

No. 622,798. Patented Apr. ll, I899. E. E. F. FAGERSTBGM. REGULATINGDEVICE FUR PETROLEUM MOTORS.

(Application filed May 10, 1898.)

2 Sheets-Sheet 2.

(No Model.)

m: Nonms PETERS cc. Pnnfou'ma. WASHINGTON. 0.1:.

UNITED STATES PATENT OFFICE.

ERNST ELIS FRIDOLF FAGERSTRGM, OF STOOKHOLM, SWEDEN.

REGULATING DEVICE FOR PETROLEUM-MOTORS.

SPECIFICATION forming part Of Letters Patent NO. 622,7 98, dated April11, 1899.

Application filed May 10, 1898. Serial No- 680,248. (No model.)

To all whont it may concern:

Beit known that I, ERNST ELIS FRIDOLF FA- GERSTRGM, mechanical engineer,of 22 Pipers gatan, Stockholm, Sweden, have invented an ImprovedRegulating Device for Petroleum- Motors, of which the following is aspecification.

Petroleum-motors usually are so regulated thereby that the governor,when the velocity of the machine increases above the normal one,actuates an arrangement that shuts off the supply of petroleum and keepsthe discharge-valve open, an explosion being thus passed and the pistononly sucking in air. The principal inconveniences of this mode ofregulating such petroleum-motors as are not provided with a lamp forheating ignitiontube and vaporizer are irregular running when the loadis irregular and the necessity of readjusting the regulator when theload is increased or decreased to any material extent.

The present invention relates to a regulating device by which the supplyof petroleum is not cut off, but only diminished, and the supply of airis decreased in the same ratio. By this device the inconveniences abovereferred to are avoided.

Figure 1 shows the air-valve in section and the controlling-wedge forthe oil-pumpin c011- nection therewith and in perspective. Fig. 2 is asectional view through the air-valve. Fig. 3 is adetail View, partly insection, of the means for controlling the action of the pu mpplunger.Fig. 4 is a perspective view showing the parts of Figs. 1 and 3connected with the governor.

A rod 0, Fig. 1, which can oscillate about its axis, is actuated bymeans of a rod or means to the same eifect by the governor of the motor.On the rod 0 is fixed an arm a, which, by means of a rod '6, isconnected with a wedge-shaped slide 1), which can be shifted on a planef. The upper end of the rod centers into a valve-chamber 61, arranged inthe air-supply conduit, Figs. 1 and 2. On the rod 0 is fixed avalve-piece h, which slidesin front of one of the orifices of thevalve-chamber as the rod is turned. The rod 0 may also be made toactuate a valve in some other manner. A cam Z is fixed to a shaft 7.0,Fig. 3, whigh is rotated from the crank-shaft of the motor. In the pathof said camis located a lever 01, which is provided at one end with aroller e' and is fulcrumed on a pin 1;,mounted on a bracket m. The otherend of the lever bears against a collar 0 on the plungerrod of the pumpwhichsupplies thepetroleum. The plunger-rod is kept depressed by aspring q. Underneath this end of the lever is located the plane f,previously mentioned, and the "slide Z), that can be shifted. thereon,said slide bearing against the part 9 of the lever 'n. The slide 12 andthe plane f may equally well be located at the other end of the lever,but in such a case abovethe latter with the slide inserted between thelever and the plane. The slide may also be adapted to be shifted betweenthe plane f and a collar, arm, or the like located above it and attachedto the plunger-rod, and the lifting of the plunger-rod may likewise bebrought about in some other manner besides that here described. 7

When the governor oscillates, the rod 0 is turned, and by this meansboth air-supply and petroleum-supply are regulated, the for mer by'th'e'valve hbein'g inoved, so as to cover morebr'less' of the orificeof the valvechamber 61, and the latter by the slide b being shiftedontheplanef, thus limiting the length of stroke of the plunger.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatWhat I claim is- In combination, the air-valve, the pumpplunger, arock-shaft 0, connected with the air-valve, a lever n and camforoperating the pump-plungeiga plane f below the lever '12 a wedge 19 tobe inserted between the plane and the lever and Fonnections between thesaid wedge and the rock-shaft c, substantially as described.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

ERNST ELIS FRIDOLF FAGERSTROM.

Witnesses:

H. TELANDER, T. BIsBERG.

